diff --git a/target/linux/x86/config-3.2 b/target/linux/x86/config-3.2
index 59de08a29..2a2765431 100644
--- a/target/linux/x86/config-3.2
+++ b/target/linux/x86/config-3.2
@@ -284,6 +284,7 @@ CONFIG_RD_BZIP2=y
 CONFIG_RD_GZIP=y
 # CONFIG_RELOCATABLE is not set
 CONFIG_RTC=y
+CONFIG_RTC_CLASS=y
 # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 # CONFIG_SAMSUNG_Q10 is not set
diff --git a/target/linux/x86/config-3.3 b/target/linux/x86/config-3.3
index 4e4ae3941..4960689fd 100644
--- a/target/linux/x86/config-3.3
+++ b/target/linux/x86/config-3.3
@@ -286,6 +286,7 @@ CONFIG_RD_BZIP2=y
 CONFIG_RD_GZIP=y
 # CONFIG_RELOCATABLE is not set
 CONFIG_RTC=y
+CONFIG_RTC_CLASS=y
 # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 # CONFIG_SAMSUNG_Q10 is not set